beach



J. BEACH.

DIE HOLDER. APPLICATION man mm, I919.

Patented Nov. 18, 1919.

2 SHEETS-SHEET I- J. BEACH. me HO LDERL APPLICATION FILED JAN-4. I919.

Patented Nov. 18, 1919.

2 SHEETS-SHEET 2.

awuewl oz JOHNBEACH, or SPRINGFIELD, or-rro, nssreivoaor ONE-HALF r0 P. r. GOLDEN, or SPRINGFIELD, OHIO.

DIE-HOLDER.

Application filed January 4, 1919.

To all whom it may concern:

Be it known that 1, JOHN BEACH, a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio have invented certain new and useful Improvements in Die-Holders, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to clamps or holders and particularly to a holder in the nature of a designed for the purpose of holding dies, tools, bits, cutters, etc, While they are being ground and particularly designed for the purpose of holding thread chasers.

The general object of the invention is to provide a holder or jig of this character in which the implement or article to be oper ated on is gripped, the holder being so arranged that the article may be supported in any desired angle or relation to the milling or grinding tool.

A. further object is to provide a device of this character including a base and a clamp or holder proper mounted on the base for rotation around an axis extending parallel to the base and also mounted for transverse adjustment relative to the axis around which it is rotatable.

Still another object is to provide means for adjustably supporting the article to be milled or ground within the clamp or holder.

Still another object is to provide a construction of this character which may be used in connection with all grinding machines and which is so constructed that it will prevent contact of the fingers with the grinding tool. i

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein 1 Figure 1 is a side elevat on of a die holder constructed in accordance with my invention Fig. 2 is a section on the line 2-2 of Fig. l;

Fig. 3 is a section on the hue 8-3 of Fig. l;

Fig. 4: is a section on thelme H of Fig.1;

Fig. his a sectionon the line 5-5 of Fig. l;

Fig. 6 is a longitudinal vertical section; Fig. 7 is a top plan View;

Specification of Letters Patent.

Patented Nov; 18, 1919;.

Serial No. 269,710.

Fig. 8 is a sectional view of the key or wrench; and

Fig. 9 is a sectional view of a modified form of the nut 17.

Referring to these drawings, 10 designates the base of the jig or holder which base islongitudinally slotted as at 11 for the passage of a holding bolt whereby it may be attached to the bed of the machine and at one end this base is formed with an integral upstanding flan e 12, having a central opening 13 this i ange being transyersely split as at 14 (see Fig. 4:). A bindlng screw 15 having an angular handle eX- tends through the jaws thus formed. Mounted upon the end face of the flange 12 is a circular plate or dial 16, the periphery of which is graduated for the whole or a portion of its periphery this dial having a central aperture 17 coinciding with the aper ture 13 through the end of the base and this dial being held in place against the base in any suitable manner, as for instance by the screw 18.

The holder oroper comprises a body designated generally 19, which is recessed transversely as at 20 to provide a clamping wall 21 opposed to the opposite face of the body 19. The body 19 and the clamping wall 21 together form jaws. adapted to receive the article to be ground, and the body 19 is proi ided with a longitudinally extending flange 22 extending partly across said recess 20. The binding screw 23 extends in through the jaw 21 and is adapted to be screwed against the article held in the recess'20 and a supporting pin 24 is provided which passes through any one of a plurality of apertures 25 in the jaw 21 and into corresponding sockets 26 in the face of the body.

Mounted upon the opposite face of the body is a slide 27 which shifts between flanges 28 formed on this side face of the body and this slide 27 has a tubular or hollow hub 29 which fits in the opening 13 and which may be held in place in said opening by turning down the screw 15. The upper end of the slide or plate 27 carries an index mark 30 which coacts with the graduations 011 the periphery of the dial 16 as seen in Fig. 7. I have heretofore referred to the plate 27 as being a slide. As a matter of fact, however, it is the body 19 which slides body 19 upon this plate, I provide an adj usting screw 31 which extends through the body 19 and which carries upon it a nut or traveler 32 operating within a chamber 33 formed in the body 19. This screw 31 carries a flange 34 bearing upon the bottom of the chamber 33 and the shank of the screw extends out through the bottom wall of the.

chamber 33 and is screw-threaded as at 35 for the reception of certain locking nuts.

The traveler or nut 32 has an extension 36 projecting out through a slot 37 in the outer wall of the chamber 33, this exten sion being interiorly screw-threaded for engagement by a screw 38 which extends through the hollow hub 39 and through an aperture in a web 40 formed in this hub. A compression spring 41 is disposed between this web and the head of the screw and this acts to urge the plate '27 or slide, as I have heretofore called it, flat against the confronting face of the body 19.

In order to insert and remove the nut 32, I close the upper end of the chamber 33 by means of a plug 42 held in place by a screw 43, this plug being perforated for the admission of oil and being closed normally by a closure 44. It will be obvious now that whenthe screw 31 is turned in one direction the body 19 will be shifted in one direction relative to the rotative axis of the hub 29 and that when the screw is turned in the opposite direction, the body will be shifted in the opposite direction relative to said axis and for the purpose of holding the screw from accidental movement but permitting the screw to be turned so as to carry the traveler 32 upward and thus'gradually feed the work, I provide a washer 45, a hollow cap 46 which fits over the screw-threaded shank 35 and against the washer 45 and which has screw-threaded engagement with the screwrthreads of the shank, and a nut 47 A spring 48 is disposed within the cap 46 and urges outward on the cap and urges the flange 34 against the lower end of the chamber.

It will be obvious now that when the nut 47 is jammed against the cap 46, then a rotation of the nut 47 in a counter-clockwise direction will cause a rotation of the feed screw in a direction to cause the body 19 to rise relative to the nut 32. The rotation of the nut 47 may be secured by means of the wrench A illustrated in Fig. 8, or a nut 47 a may be used for this purpose which engages over the cap 46 and is formed with an outwardly projecting flange a notched at intervals so that it maybe readily turned by hand.

Preferably, and for the purpose of providing easy means whereby the body 19 may be shifted on its ro-tative axis, I provide the handle 49 projecting from the body.

This holder is particularly designed for the purpose of sharpening or grinding chasers which are used with automatic dies and I have illustrated my holder in connection with a chaser C of an ordinary form. This chaser as usual is formed with a recess 0 in one side and the pin 24 is designed to be inserted through the perforations 25 in such a position as to support the chaser while it is being adjusted between the jaw 21 and the body to the proper angular position. After the chaser has been properly set, then the screw 23 is turned up and binds against the chaser and holds it in its proper set position. When the chaser has been properly adjusted in the clamp or holder, then the body 19 may be rotated into the proper angular position desired and when it is properly adjusted, it is held in this adjusted position by turning down on the cl ampscrew 15. Then the work may be fed upward against the grinding wheel or cutting wheel by rotating the feed screw 31 as before described.

It will be obvious that this device may be used for other purposes than grinding dies or chasers and that it is adapted for very accurate and careful work in grinding dies, tools, bits, facing cutters and the like. The device is thoroughly effective for the purpose intended, is extremely accurate and saves a great deal of time. Furthermore, with this device there is no liability of the workman grinding his thumbs and fingers in adjusting the work or holding it in position to be operated on.

I claim:

1. A holder for articles being ground comprising a base having a clamp at one end, a member having a hub disposed in the clamp and rotatably adjustable therein, an article clamp having sliding engagement with said member for movement diametrically across the axis of the member, a screw operatively engaging the rotatable member and said base clamp whereby the member may be adjusted, and means for holding said member in any rotatably adjusted position.

2. A holder for articles being ground comprising a base having a clamp at one end and extending at right angles to the base, a graduated dial disposed upon this end of the base and concentric to the axis of said clamp, a member having a hub disposed through the clamp and rotatably adjusted therein and coacting with the dial, an article clamp having sliding engagement with said rotatable member diametrically across the axis of the same, and an adjusting screw mounted upon the article clamp and operatively engaging said member.

3. A holder for articles being ground comprising a; base having a clamp at one end and a graduated dial concentric to the clamp, a member having a hub disposed through the clamp and rotatably adjustable therein and coacting with the dial, said member having a central projecting screwthreaded portion, an article holder having a longitudinally extending recess receiving said projecting portion, and an adjusting screw extending through the end walls of said recess and engaging the screw-threads of said member whereby the article clamp may be shifted diametrically across the axis of the rotatable member.

4. A holder for articles being ground comprising a longitudinally slotted base having a split clamping flange at one end, a graduated dial disposed upon this end of the base, a member having a hub disposed through the split flange and rotatably adjusted therein and coacting with the dial, an article clamp having sliding engagement with said member for movement diametrically across the axis of the member, and an adjusting screw mounted upon the clamp and operatively engaging said member.

5,. A holder for articles being ground comprising a longitudinally slotted base having a clamping flange at one end, a plate hav ing a tubular hub inserted through the clamping flange and rotatable therein, a dial mounted upon the base adjacent the clamping flange and with which said member coacts, and a clamp comprising a body recessed to receive the work having means for clamping the work within said recess, 'a screw passing through said body, a nut carried on the screw and having a portion extending out through said body and operatively engaging the plate, means for rotating the screw to adjust the body relative to the plate, and means for holding the screw in adjusted positions.

6. A holder for articles being ground comprising a base having a clamping flange at one end,the clamping flange being formed to provide a split bearing, a dial mounted against the end face of the clamping flange and having its periphery graduated, a plate bearing against the dial and having a tubular hub inserted through the clamping flange, a body recessed to receive the article being ground and having means for holding the article in said recess, said body having a chamber and extending through it, and a slot extending inward from that face of the body confronting the plate and intersecting said chamber, a screw disposed within the chamber and having a shank extending out therefrom, a nut mounted on the screw within the chamber, a binding screw extending through the tubular hub and engaging said nut, and binding nuts mounted upon the shank of the screw and formed to receive a wrench.

7. In a device of the character described, a body having a recess to receive the article being ground, the opposite walls of the recess being formed with a plurality of perforations, a supporting pin adapted to be inserted through any of said perforations, and a screw passing through one wall of the recess and adapted to engage the article therein. a

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

JOHN BEACH.

Witnesses:

P.-F. GOLDEN, J. M. HARNER. 

